GMT900 (3rd gen) 2007–2013
Driver's side, under the dashboard above the brake pedal and to the left of the steering column. No cover — exposed and directly accessible. Standard 16-pin OBD-II connector.
GMC Sierra 1500 OBD port location
Three generations, 2007–2024. Pick yours.
2019–2024
5th Gen (T1XX)
Location
Driver's side under the dashboard, left of the steering column. No cover on most trims. Standard 16-pin DLC connector facing down.
No diagram for this one yet. Ask for one and we'll draw it. The more requests, the sooner.
Also on this Sierra 1500
- KeysTransponder · Smart key
- Tools confirmed5
- Transponder chipSubscribers
- Programming procedureSubscribers
2014–2018
GMTK2
Location
Under the driver's side dashboard, below and to the left of the steering column. No cover — accessible without removing any trim. Standard 16-pin OBD-II connector.
No diagram for this one yet. Ask for one and we'll draw it. The more requests, the sooner.
Also on this Sierra 1500
- KeysRemote head key · Transponder
- Tools confirmed7
- Transponder chipSubscribers
- Programming procedureSubscribers
Questions
GMC Sierra 1500 OBD questions
5th Gen (2019–2024): Driver's side under the dashboard, left of the steering column. GMTK2 (2014–2018): Under the driver's side dashboard, below and to the left of the steering column. GMT900 (2007–2013): Driver's side, under the dashboard above the brake pedal and to the left of the steering column.
Found the port. Now program the key.
Step-by-step add-key and all-keys-lost procedures for every Sierra 1500, which of your tools will do it, and what catches people out.
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